The ‘Safire’ firing furnace, together with the ‘DriTech’ dryer, were designed by Despatch Industries to provide PV manufacturers with the ability to properly segment, control and adjust key process parameters. The Safire design features dual, independent chambers with no lane-to-lane influences that are claimed to provide the greatest degree of firing repeatability and capability for cell efficiency optimisation.
Optimization of process controls, especially for high-performance solar cells is required to maximize yield and deliver lowest cost per watt. The challenge has been to provide high-throughput volume equipment that provides the required process uniformity, stable and repeatable cavity temperature to ensure exact profile repeatability.
The Safire is built on the foundation of process separation, stability, high uptime and the ability to tailor thermal profiles around advanced materials and architectures. The new firing furnace has segmented and optimized critical components of the cell process for maximum control and stability. The Safire integrated with the DriTech dryer decouples VOC removal from the burn-out process and ensures that VOCs are removed to prevent furnace and facility contamination. Burn-out is separated from firing for proper binder removal, a contamination-free firing zone and a stable, repeatable thermal experience. The Safire’s dual independent chamber design eliminates lane-to-lane loading influence.
Solar cell firing furnace.
The Safire offers further process optimization through ‘Microzone’ technology, which provides the ability to precisely tailor the burn-out interval, the time above melting temperature and the peak firing and cooling profiles.
September 2012 onwards.